Boiler-flue cleaner.



s. H.. LIMBERT.- BOKILIJR PLUE GLEANER. 4, APPLICATION FILED SEPT. 3.-190B. 1

913,963. Patented Mar. 2, 1909.-

UNITED STATES PATENT OFFICE.

V'SAMUEL HrLIMBERT, OF SPRINGFIELD, OI-IIO, ASSIGNOR O11' ONE-HALF 'lOCHARLES E. BRENING, OF SPRINGFIELD, OHIO.

BOILER-FLUE CLEANER.

Specification of Letters Patent.

y Patented March 2, 1909` Application filed September 3, 1908. SerialNo. 451,467.

To all whom it may concern:

Be it known that I, SAMUEL H. LIMBERT, a citizen of the United States,residing at .S ringeld, in the county oi' Clark and State ci) Ohio, haveinvented certain new and useful Improvements in Boiler-Fine Cleaners, ofwhich the following is a specification, rc1- erence being had therein tothe acconnianying drawings.

My invention relates to boiler flue cleaners, and more particularly tothat type of flue cleaner employing a jet oi steam which is dischargedinto the flue.

The object of the invention is to provide a cleaner of 4this characterwhich will be so Vmounted relatively `to the boiler i'lues that it canbe moved into position to discharge into. any of said ilues and can beadjusted toward and away from the flues which will bc rovided with means'for preventing the burning of thatportion of the same lying within thefurnace walls; which will be provided with means forl rotating the sainewhich will be provided with means for drawing oli' the waters ofcondensation and preventing thoir discharge into the ilues; and further,to provide such a device which will be simple and comparativelyinexpensive in construction but will be possessed oi a high 30.

degree o1" efficiency.

With these objects in view my inventionl consists in certain novelfeatures and in certain parts 'and combinations to .behereinafter-described, and then more particularly pointed out in theclaims.

In the accompanying drawing is a vertical sectional view through one endof a boiler furnace and a boiler, showing my invention applied thereto.

In this drawing I have illustrated the prel ferred form of my inventionand have'shown the same as comprising a spray pipe l rotatably andslidably mounted in the rear wall 2 of a boiler furnace and preferablyjournaled in boxes Binounted in the opposite ends of the bearingaperture in the wall '2. The inner end of the pipe 1 extends atsubstantially right angles thereto and transversely to the boiler toform a spray head or discharge nozzle 4. This discharge nozzle has itsend closed, as shown at 6, and is provided in the side adjacent to theboiler with a series of apertures 5 which are so arranged .therein that,as the discharge nozzle is moved across' apertures will be brought intoalinement with each of the i'lues. The spray pipe 1 is preferablyjournale'd in the wall 2 in a position substantially midway between theopposite sides o'l the boiler and with its longitudinal axis insubstantially the same horizontal plane with the upper wall oi theuppermost of the ilues in said boiler. Thus, by moving the pipe 1through an arc of 180 degrees,'the discharge nozzle will be moved acrossall that portion of the boiler in which the lilucs are mounted and someone or more oi the'1 apertures 5 will have been brought into alinementwith each of the ilues. I have here shown the apertures 5 as so arrangedin the discharge nozzle that one aperture is in alinement with eachflue, but it will be obvious that any suitable number and arrangement ofapertures may be employed. Suitable means, such as an adjustable collar7, are provided 'for limiting the inward movement oi the pipe 1 so thatthe discharge nozzle may be supported in the desired relation4 to theboiler l'lues.

Steam is preferably supplied to the spray as here shown, is ol'anexterior diameter slightly less than the interior diameter of the spraypipe 1 and has itsadjacent end inserted in the outer end oflthat pipe.The spray pipe 1 is provided with a suitable stufling box 9 to close thejoint between the saine and the supply pi e 8 and enable the spray pipe'to be moved ongitudinally of the sup ly pipe. The supply pipe is4provided wit suitable controlling means, such -as a -valve 10, and has,at a point beyond and adjacent to this valve, a suitable drain cock, bymeans of which the water of condensation accumulating above "the valve10 may be drawn otf, thus avoiding the discharge of the same into theilues when the valve 10 is;l

first opened.. In the present instance, the

controlling valve 10 ijs shown in the form of a globe valve and thatportion of the valve casing opposite lthe controlling handle' isprovided with a reinforced ,-ortion l1 hav'- ing an outlet aperture 412winch is cont-rolled by a valve 13, oi' any suitable character. supplypipe 8 is also provided, at a point between thc controlling valve '10and the spray pile l, with 'a check valve adapted to be he d in itsclosed position by the passage of steam through the su )ply pipe 8, andto automaticallyopen, w en the steam has The been cut off from t-hatpipe, to admit air to the pipe and to discharge nozzle 4, the passage ofair through the discharge nozzle being sufficient to eifeetually preventthe burning of that nozzle and that portion of the pipe 1 which liesWithin the furnace Walls. And further, the-passage of the air throughthe discharge nozzle 4 serves to facilitate the draft through thefurnace. In the present instance, this check valve is shown asconsisting of a valve casing 14 connected to the supply pipe 8 by meansof a T-joint 1.5 and having its upper end provided with an inlet 16controlled by'a valve 17 having a stem 1S guided in a s ider 19 arranged.Within the casing 14. hen the valve 10 is open and the steam is passingthrough the supply pipe, a sufficient amount of steam will pass into thecasing 14 to force the valve 17 against-its seat and hold the same inits closed position. As soon as the valve `l() has been closed, however,to cut od'the steam from the supply pipe, the Weight `of the valve 17will "cause the same to automatically open, thus admitting air to thesupply ipe and to the spray pipe for the purpose escribed. Suitablemeans .are also provliied for rotating the spray pipe 1 about itsongitudinal axis,

and, in the resent instance, this means comprises a andle 20 connectedto the outer end of'the spray pipe 1 at a point between tlie adjustablecollar 7 and the stuifing box 9. This handle 2() is preferably securedto the spray pipe A1 by means of a clamp 21 adapted to engage the pipeand to be readily secured thereto in the desired position. The handle 20is preferably secured to the pipe 1 in a position substantially parallelwith the discharge nozzle 4. Thus, the positionjof the handle 20 on theexterior of the furnace Wall will indicate the position of the dischargenozzle 4 relatively to the boiler flues.

. The operation of the device will be readily understood from theforegoing. description and it Will be apparent that, by rotating the sray pipe about its longitudinal axis, the

ischarge nozzle may be brought into such a position relatively to any ofthe flues inthe ciler as to cause one or more separate and distinct 3etsof steam to be discharged into .that flue; that I have provided thisspray pipe with adjustable means for limiting its inward movement tobrin the same into thedesired position relative y to the ends of theilues; and also that I have provided the device With means for rotatingthe saine, this rotating means being suchl as to indicate the positionof the nozzle. Further, it Will be apparent that I have provided meansfor preventing the discharge nozzle from burning When the saine is notin use; that I have provided means for drawing oli' the Waters ofcondensation from the supply pipe and avoiding the discharge of thesaine into the flues; that the apparatus as a Whole is of a simple andeasily operated character and is of a comparatively inexpensiveconstruction, the several parts being, for the inost part, of ordinaryconstruction and requiring few parts of special construction; and that,by reason of -its construction and its ca )abilityof being brought intoposition to reac all of the lues in the boiler and, the manner in Whichthe steam is discharged into the boiler, the device possesses ahighdegree'of efiicieney.

I Wish it to be understood that I dofnot desire to be limitedvto thedetails of construction shown and deseribed,ri`or obvious modificationswill occur to a person skilled in the art.

Having thus fully described my invention,

what I claim as new and -desire to secure by Letters Patent, is 1. In aboiler fluecleaner of the character described, a furnace Wall, a boilermounted Within the same,'a spray pipe provided with a discharge nozzleextending transversely to said boiler, said spray pipe being rotatablyand slidably mounted in said furnace Wall,

whereby said discharge nozzle may be ro-l tated about an axis extendinglongitudinally to said boiler' and may be moved toward and awa-y fromsaid boiler, a supply pipe extending into the outer end of said s raypipe, an( means for controlling the through said supply pipe.

2. In a boiler flue cleaner of the character described, a furnace Wall,a boiler mounted WithinV the same, bearings mounted in said furnacewall, a spray pipe journaled in said bearings, a discharge nozzlecarried by said spray pipe and extending transversely to said boiler andhaving discharge apertures therein, said spray y pipe being slidablymounted in said bearings, whereby the discharge nozzle may be movedtransversely to said boiler and may be moved toward and away from theend thereof, a supply pipe extending into thc outer end of said spraypipe, and means for controlling the passage of steam throughsaid-.supply pipe.

3. In a boiler flue cleaner of the character described, the combination,with a furnace wall, and a boiler mounted Within the same, of a spraypipe rotatably and slidably mounted iu said Wall and extending beyondthe outer side thereof, a discharge nozzle carried by the inner end ofsaid spray pipe and having apertures adapted to be brought intoalinenient with the flues of-said boiler, a collar adj ustably mountedon. that portion of said spray pipe extending beyond the outer side ofsaid wall, and a supply pipe extending into the outer end of said spraypipe.v

l ow of steam iso `for admitting air to said nozzle when the steam hasbeen cut off.

5. In a boiler flue cleaner of the character described, the combination,With a furnace Wall, a boiler' mounted within the same, a spray pipejournaled in said wall, a discharge nozzle carried thereby and adaptedto dischar e into the flues of said boiler, and a supp y pipe connectedto said spray pipe, of means for cutting off the How of steam throughsaid supply pipe, and automatically operated means for admitting air tosaid spray pipe when the steam has been cut olf from said supply pipe.

6. Iii a boiler flue cleaner of the character described, thecombination, with a furnace Wall, a boiler mounted Within the same, aspra -pipe journaled in said wall, a discharge Anozz e carried therebyand. adapted to discharge into the flues of said boiler, means fiormoving said spray pipe toward and away from said boiler, and a steamsupply pipe connected to said spray pipe, of means for cutting off the'flow of steam through said supply pipe, and automatically operatedmeans for admitting air to said spray pipe when the steam has been cutIoil from said su l i e.

i;i)'iripapboilei; flue cleaner of the character described, thecombination, with a furnace Wall, a boiler mounted Within the same, aspray pipe journaled in said Wall and having a discharge nozzle adaptedto discharge into the flues of said boiler, moans for moving said spraypipe toward and away froni said boiler, and a supply pipe connectedtosaid 'spray pipe, of means for controlling the 'flow' of steam throughsaid supply pipe, a valve mounted in said supply 'pipe between saidcontrolling means and said spray pipe and adapted to be closed by thepassage ofsteam through said suppl)v pipe and to automatically open whensaid steam has been cut off from said supply pipe. i

8. In a boiler flue cleaner of the character .(lescribed, thecombination, with a furnace ed in said furnace wall and having its outerend extending beyond said wall, a discharge nozzle carried by the innerend of said spray pipe and adapted to discharge into the llues of saidboiler, a stuffing box carried by the outer end of said spray pipe, asupply pipe ext-ending through said stuffing box into said spray pipe,means for controlling the flow of steam through said supply pipe, andmeans for moving said spray pipe about a longitudinal axis and formoving the same longitudinally. y

9. ln a boiler flue cleaner of the character described, the combination,with a furnace Wall, and a boiler mounted within the same, of 'a spraypipe rotatably and slidably mounted in said furnace wall, a dischargenozzle carried by the inner end of'said spray 'pipe extendingtransversely to said boiler and having apertures adapted to be movedinto alinement with the iiues of said boiler, a supply pipe having itsend inserted in the outer end of said spray pipe, a handle for rotatingsaid spray pipe, avalve for controlling the flow of steam through saidsupply-pipe, and means connected to said supply'pipe between said valveand said spray pipe for admitting air thereto when said valve has beenclosed to cut off the steam from said supply pipe.

y 10. In a boiler flue cleaner of the character described, thecombination, with a furnace wall', a boiler mounted within said Wall, aspray pipe rotatably mounted in said furnace wall and having a dischargenozzle extending transversely to said boiler, a supply pipe connected tosaid spray pipe, a cut-oil valve inserted in said supply pipe, and avalve-coiitrolled outlet for said supply pipe on that side of saidcut-olf valve removed from said spray pipe, and an automaticair-admission valve connected to said supply pipe between said cut-olfvalve and said spray pipe.

In testimony whereof, Iaflix my signature in presence of two Witnesses.

SAMUEL H. LIHBERT.

Witnesses:

A. C. LINK, Haiuiiiir L. HAMMAKER.

